JAMES A. G. REHN 345 



the four distinct spines on the dorsum of the same, in the deeply 

 sculptured lateral lobes of the pronotum and in ihv proportion- 

 ately more elongate caudal limbs. 



Type. — cf ; Cachi, Costa Rica. Elevation, 35()() feet. Janu- 

 ary, 1914. (C. H. Lankester.) [Academy of Natural Sciences 

 of Philadelphia, Type no. 5348.] 



Size medium: form of the visual bizarre type found in tliis genus, sulx'om- 

 pressed: surface in general rugulosc, the abdomen smoother than elsewhere, 

 tegmina and exposed portion of wings lichenose-verrucose. 



Head well seated in the i)ronotum, short, broad, deep, subdeplanate 

 cephalad, greatest depth (including mandibles) slightly greater than the 

 greatest width across eyes; when seen from the side occiput gently arcuate: 

 fastigium elongate, elevated, directed cephalo-dorsad, broad proximad, 

 much compressed mesad and distad, in lateral view narrowing distad, the distal 

 fourth decurved at an obtuse angle, apex bluntly rounded; fastigium of vertex 

 separated from the fastigium of the face by an area containing dorsad the 

 paired, moderately bulbous, dorsal ocelli, and ventrad a pair of lirief, finger- 

 like, attingent processes; fastigium of face broad, blunt, rounded, containing 

 the large, moderately convex ocellus: face faintly transverse, distinctly wrinkled 

 with small transverse wrinkles, in profile strongly sinuate and tiullate ventrad: 

 clypeus with its surface developed into a pair of rounded tubercles: genae with 

 a distinct]}' elevated, but rounded, tubercle briefly dorsad of the ventro- 

 caudal angle, cephalad of this the genae are subexcavate, infra-ocular groove 

 markedly sinuate: eyes strongly prominent and globose when seen from the 

 dorsum, in basal outline ovato-circular, the axis ventro-cephalic to dorso- 

 caudal in direction, the greatest depth of the eye faintly greater than the 

 depth of the infra-ocular portion of the genae: antennae slightly surpassing the 

 apex of the abdomen; proximal and second joints each with a decided digiti- 

 form knob on the internal face, that on the second joint the larger; joints 

 each thickened and enlarged distad, this tendency subobsolete toward the 

 apex of the antennae, in addition we find four areas, regularly placed, where 

 from t^\■o to four segments are considerably enlarged on the dorsal and lateral 

 surfaces, and covered to a greater or lesser extent with short, stiff bristles, 

 which are absent from the ventral surface. 



I'ronotum deeply scul])tured and quadrispinose selliform: disk suliequal in 

 l)roi)ortions; cephalic margin broadly obtuse-angulate emarginate, the margin 

 moderately convex laterad; caudal margin more deeply and more nearly 

 V-emarginate, this dividing the margin into two subarcuate lobes, the margin 

 cingulate; at cephalic third the disk bears a very deci)ly impressed, trough- 

 like, transverse impression, which as deeply severs the lateral angles of the 

 disk, another similar but very much more shallow one is indicated, but broken 

 mesad, at the caudal third: lateral angles with a low, compressed tul)ercle at 

 the cephalic margin, a far larger, conical, acute, obliquely divergent, spiniform 

 tubercle is placed between the first and second transverse impre.ssions and 

 caudad of the latter a shorter, more longitudinal and blunter, but generally 



TRANS. A.M. ENT. SOC, XLIV. 



